During the Cretaceous period, the rift between South America and Africa would be forming ; this may explain the contrast in diversity between the two continents.

During the Jurassic and Cretaceous, the remaining nonmammalian cynodonts were small, such as Tritylodon.

During the late Cretaceous era, monitor lizards or their close relatives are believed to have evolved into amphibious and then fully marine forms, the mosasaurs, which reached lengths of up to 17 m.

During the Late Cretaceous, cheilostomes diversified rapidly to reach a level of more than 20 families in the Maastrichtian.

During part of the Jurassic, rising seas flooded the low-lying areas of the continent, forming the Sundance Sea ; in the Cretaceous, much of the Interior Plains region lay submerged beneath the Western Interior Seaway.

During the Cretaceous period, the central area of the United States was covered by a shallow sea, which disappeared as the land rose.

During the Late Cretaceous, the climate was warmer than present, although throughout the period a cooling trend is evident.

During the Cretaceous flowering plants were limited in their geographical distribution.

During the early Cretaceous, Wealden Lake covered the majority of what is now northern Europe.

During the Cretaceous, Earth on average was warmer than it is now, making the polar regions more habitable.

During the early part of the Late Cretaceous all groups of sauropods, with the exception of the titanosaurs, had gone extinct.

During the Cretaceous, South America pulled away from the rest of Gondwana.

During the Cretaceous the site ( red boxes ) was within the Antarctic Circle

During the Early Cretaceous the location was a flood plain within a great rift valley that formed as Australia started to separate northward from Antarctica.

During the Cretaceous ( labeled K on the graph ), sea level was so high that a seaway extended across the center of North America from Texas to the Arctic Ocean.

During the later portion of the Cretaceous, from, average global temperatures reached their highest level during the last ~ 200 million years.

During the Cretaceous, flowering plants were " geographically limited on the landscape ", and so it is likely that this dinosaur fed on the predominant plants of the era: ferns, cycads and conifers.

During part of the late Cretaceous period, the region had been submerged under a shallow sea, the Western Interior Seaway, and preserves extensive marine deposits.

During the Jurassic, as Pangea began to rift apart, large grabens formed in central India filling with Upper Jurassic and Lower Cretaceous sandstones and conglomerates.

During the evacuation, a glacier which contains two sea reptiles from the Mesozoic era, Cretaceous and Maelstrom, breaks off.

During the Permian, all the Earth's major land masses were collected into a single supercontinent known as Pangaea.

During the late Permian all the continents were combined into one supercontinent named Pangaea and all the oceans formed one superocean, Panthalassa.

During the Devonian Period, the region lay at the bottom of a shallow inland sea about ten degrees north of the equator in the supercontinent of Euramerica.

During the Permian and Triassic periods, with the Iapetus Ocean entirely closed, Scotland lay near the centre of the Pangaean supercontinent.

During the Late Devonian, the continents were arranged differently, with a supercontinent, Gondwana, covering much of the southern hemisphere.

During the early Paleozoic Era East Antarctica joined the Gondwana supercontinent.

During break-up of the supercontinent, rifting environments dominate.

During the Hirnantian, much of the world ’ s land mass was gathered into a supercontinent called Gondwana, which occupied extreme southern latitudes and covered the south pole.

During the period covered, continents drifted about, eventually collecting into a single landmass known as Pangaea and then splitting up into the current continental landmasses.

During the Middle Jurassic epoch, Pangaea began to separate into Laurasia and Gondwana, and the Atlantic Ocean formed.

During this period he also completed his first public buildings, the Jyväskylä Workers ' Club in 1925, the Jyväskylä Defence Corps building in 1926 and the Seinajoki Defence Corp building in 1924-29.

During this period he also completed two woodcut series, the Great Passion and the Life of the Virgin, both published in 1511 together with a second edition of the Apocalypse series.

During the Bourbon Restoration, construction was halted and it would not be completed until the reign of King Louis-Philippe, between 1833 and 1836, by the architects Goust, then Huyot, under the direction of Héricart de Thury.

During his years in London, A. E. Housman completed A Shropshire Lad, a cycle of 63 poems.

During this period, Athanasius completed his work Four Orations against the Arians and defended his own recent conduct in the Apology to Constantius and Apology for His Flight.

During the same period, Iggy Pop, with Bowie as a co-writer and musician, completed his solo album debut, The Idiot, and its follow-up, Lust for Life, touring the UK, Europe, and the US in March and April 1977.

During his time at the museum he produced numerous publications on bird taxonomy, and in 1942 his first book, Systematics and the Origin of Species, which completed the evolutionary synthesis started by Darwin.

During this time, HMBB was the first company to assemble bodies for Ford Australia until their Geelong, plant was completed.

During 1956, an IAEA Statute Conference was held to draft the founding documents for the IAEA, and the IAEA Statute was completed at a conference in 1957.

During 1945, Friedman submitted Incomes from Independent Professional Practice ( co-authored with Kuznets and completed during 1940 ) to Columbia as his doctoral dissertation.

During his leadership projects completed included the first storage reservoir at Lake Minnewanka, a second transmission line to Calgary and the construction of the Kananaskis Falls hydro station.

During his time in Italy he completed Peuerbach's Almagest abridgement, Epytoma in almagesti Ptolemei.

During the regular season, Tarkenton completed 61. 7 percent of his passes for 2, 113 yards, 15 touchdowns, and just seven interceptions.

During the 1994 season for San Diego, Humphries completed 264 out of 453 attempts for 3, 209 yards and 17 touchdowns, with 12 interceptions.

During this time Adorno not only produced a significant series of notes on Beethoven ( which was never completed and only published posthumously ), but also published Mahler: A Musical Physiognomy in 1960.

* November 16 – During the night the River Tyne, England, floods, destroying many bridges and killing several people ; the replacement main bridge at Newcastle upon Tyne will not be completed until 1781.

During this time most of Wagner ’ s creative energy was devoted to the Ring cycle, which was finally completed in 1874 and given its first full performance at Bayreuth in August 1876.

During this time he taught himself the Portuguese language to read the poet Camões in the original ; as insufficient Russian-speaking officers were available at the War Office, his knowledge of the Russian language and textual analysis skills were used to translate a Russian parachute training manual-a task he completed after 11pm on top of his normal duties, deducing the meaning of many technical terms from the context ; he was convinced that the Soviet Union must eventually enter the war on the Allied side.

During this period, a number of renovations were completed.

During his later years, Telford was responsible for rebuilding sections of the London to Holyhead road, a task completed by his assistant of ten years, John MacNeill ; today, much of the route is the A5 trunk road.

During 1985 the band completed lengthy tours of the UK and the US while recording their next studio record, The Queen Is Dead.

During this process, the temperature of the system will stay constant as heat is added: the system is in a " mixed-phase regime " in which some parts of the system have completed the transition and others have not.

During the early stages of the Glasgow School of Art Mackintosh also completed the Queen ’ s Cross Church project in Maryhill, Glasgow.

During that period, the airline completed 125, 000 ferry flights.